Track the number of times subs are called

https://metacpan.org/release/Test-SubCalls

Tools to test taintedness

https://metacpan.org/release/Test-Taint

Helps to test various Test::Builder derivatives

http://search.cpan.org/dist/Test-Tester/

Perl extension to override time()/sleep() core functions for testing

https://metacpan.org/release/Test-Time

Perl test module to test/assert response times

https://metacpan.org/release/Test-Timer

Trap exit codes, exceptions, output, etc

https://metacpan.org/release/Test-Trap

PerlUnit testing framework

https://metacpan.org/release/Test-Unit

Do use_ok() for all the MANIFESTed modules

https://metacpan.org/release/Test-UseAllModules

Check to see that version in modules are sane

https://metacpan.org/release/Test-Version

Declarative testing for your web app

https://metacpan.org/release/Test-WWW-Declare

Testing-specific WWW::Mechanize subclass

https://metacpan.org/release/Test-WWW-Mechanize

Perl extension to test methods for warnings

https://metacpan.org/release/Test-Warn

Test for warnings and the lack of them

https://metacpan.org/release/Test-Warnings

Test that freed memory objects were, indeed, freed

https://metacpan.org/release/Test-Weaken

Test fallback behaviour in absence of modules

https://metacpan.org/release/Test-Without-Module

Compare XML in perl tests

https://metacpan.org/release/Test-XML

Validate XML and XHTML

https://metacpan.org/release/Test-XML-Valid

Testing Module for YAML Implementations

https://metacpan.org/release/Test-YAML

Validation of the META.yml file in a distribution

https://metacpan.org/release/Test-YAML-Meta

Test for valid YAML

https://metacpan.org/release/Test-YAML-Valid

Handy UTF-8 tests

https://metacpan.org/release/Test-utf8

Test2 Harness designed for the Test2 event system

https://metacpan.org/release/Test2-Harness

Fail if tests warn

https://metacpan.org/release/Test2-Plugin-NoWarnings

Distribution with a rich set of tools built upon the Test2 framework

https://metacpan.org/release/Test2-Suite

Automatic and manual text wrapping and reformating formatting

https://metacpan.org/release/Text-Autoformat

Extract delimited text sequences from strings

https://metacpan.org/release/Text-Balanced

Composition and decomposition of comma-separated values

https://metacpan.org/release/Text-CSV

Text::Diff - Perform diffs on files and record sets

https://metacpan.org/release/Text-Diff

Match globbing patterns against text

https://metacpan.org/release/Text-Glob

Perl interface to iconv() codeset conversion function

https://metacpan.org/release/Text-Iconv

Parse text into an array of tokens or array of arrays

https://metacpan.org/release/Text-ParseWords

Perl extension to patch text with given patch

https://metacpan.org/release/Text-Patch

Read record-oriented files

https://metacpan.org/release/Text-RecordParser

Manual text wrapping and reformatting

https://metacpan.org/release/Text-Reform

Implementation of the soundex algorithm

https://metacpan.org/release/Text-Soundex

Line wrapping to form simple paragraphs

https://metacpan.org/release/Text-Tabs+Wrap

Display text in formatted table output

https://metacpan.org/release/Text-TabularDisplay

Expand template text with embedded Perl

https://metacpan.org/release/Text-Template

Track changes between documents

https://metacpan.org/release/Text-WordDiff

Easy-to-use class for error objects

https://metacpan.org/release/Throwable

Perl module implementing ordered in-memory associative arrays

http://search.cpan.org/dist/Tie-IxHash/

Variable ties made easier: much, much, much easier

https://metacpan.org/release/Tie-Simple

Rounded or exact English expression of durations

https://metacpan.org/release/Time-Duration

Parse string that represents time duration

https://metacpan.org/release/Time-Duration-Parse

Perl5 module implementing High resolution time, sleep, and alarm

https://metacpan.org/release/Time-HiRes

Efficiently compute time from local and GMT time

https://metacpan.org/release/Time-Local

Time::Piece::MySQL - Adds MySQL-specific methods to Time::Piece

https://metacpan.org/release/Time-Piece-MySQL

Set of modules for time manipulation

https://metacpan.org/release/MUIR/Time-modules-2013.0912

Perl5 module containing a better/faster date parser for absolute dates

https://metacpan.org/release/TimeDate

Re-port of a perl5 interface to Tk8.4

https://metacpan.org/release/Tk